<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item in hotCities" :key="item.id" @click="clickCity(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(value, key) in cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="item in value" :key="item.id" @click="clickCity(item.name)">{{item.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'cityList',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  methods: {
    clickCity (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState(['city'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, {click: true})
  },
  watch: {
    letter () {
      const el = this.$refs[this.letter][0]
      this.scroll.scrollToElement(el)
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~@styles/varibles.styl'
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    position absolute
    overflow hidden
    top 1.59rem
    left 0
    right 0
    bottom 0
    .title
      line-height .5rem
      background #EEEEEE
      padding-left .2rem
      color: #666
      font-size .3rem
    .button-list
      overflow hidden
      padding .1rem .6rem .1rem .1rem
      .button-wrapper
        float left
        width 33%
        .button
          margin .1rem
          padding .12rem 0
          text-align center
          border .02rem solid #ccc
          border-radius .1rem
    .item-list
      .item
        line-height .74rem
        color: #666666
        padding-left .2rem
</style>
